Insulator.



In. 697,90l. f Patented Apr. 8, 1902.

' w. H. NICHOLS.

INSULATOR.

(Application fllod Dec. 6, 1901.)

(In Iodol.)

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| Tzns co. mYO-UPHD wAswmsrou o c UNITED STATES PATENT OEEIcE.

\VILLIAM Il. NICHOLS, OF BENNINGTON, VERMONT, ASSIGNOR OF ONE- IIALF TO ELMER E. LARRABEE, OF BENNINGTON, VERMONT.

INSULATOR.

SIEGIFICATION forming part of Letters Patent No. 697,001, dated April 8, 1902.

Application filed December 6, 1901. Serial No. 84,952. (No model.)

To all whom it nuty concern:

Be it known that 1, WILLIAM H. NIonoLs, a citizen of the United States, residing at Benningtou,in the county of Bennington and State of Vermont, have invented new and useful Improvements in Insulators, of which the following is a specification.

This invention relates to insulators for supporting electrical conductors or leads, and particularly to that class which are applied to ceilings, walls, and other supports. These devices are usually constructed of two parts and assembled and secured after the electrical conductors or leads are inserted therein. Heretofore these parts have been dissimilar in form, and two independent molds have been necessary to produce the same. Furthermore, the insulators as heretofore constructed when placed upon the market or furnished in bulk required an equal number of' the parts of different form to be supplied or else a portion of the devices would be useless by reason of the failure to assemble unrelated remaining parts, and thereby cause considerable inconvenience and annoyance, as well as expense and delay, in obtaining the parts of the insulators incapable of use to render said parts of practical value.

The present form of'insulator has been devised to overcome the difficulties and disadvantages enumerated; and it consists, primarily, in forming the insulator in two parts and of exact duplicate construction and dimensions, so that by simply reversing one part it may be applied to the other, and vice versa, and thus materially reduce the expense of manufacture, as one mold or other forming means can be utilized in producing both parts of the insulator.

The invention further consists in the details of construction and arrangement of each part or member of the insulator, whereby either part or member maybe operatively applied to the other and practically hold electrical conductors or leads and withoutin jury to the insulation of the latter.

In the drawings, Figure 1 is a perspective view of a complete insulator embodying the features of the invention. Fig.2 is a side elevation of one of the members of the insulator. Fig. is a transverse vertical section through the same member shown by Fig. Fig. 4 is a detail perspective view of one f the members.

Similar numerals of reference are employed to indicate corresponding partsin the several views.

The numerals 1 and 2 designate the two members or parts of the insulator, each of the said members or parts having such dimensions and proportions as to constitute onehalf of the complete insulator and both parts freely reversible to accommodate various eontingencies in assemblage. As both members or parts are exact duplicates in the details of construction, a specific description of one will be applicable to the other, and it is only necessary to describe the one part or member. Each part or member is substantially cylindrical and cut away at one side to form a shoulder 3, having a V-shaped groove 4 at its inner terminal and an outer smaller V-shaped groove 5 at a higher elevation than the groove 4 and formed with a series of transverse corrugations 6. Extending upwardly from the shoulder 3 at an angle of inclination is a central table 7, having its lower extremity extending into the groove 4 and dividing the latter into two parts, and on opposite sides of the table are interlocking projections 8, with inverted-V-shaped apices 9, of approximately the same dimensions as the separated parts of the groove 4. The apices 9 project above the high portion 10 of the member, and beyond said apices the upper face of said portion 10 is formed with a corrugated groove 11, similar to the groove 5, heretofore explained. Extending vertically through the center of each member and the table 7 thereof is a bore or aperture 12 for the reception of the fastening-screw or analogous device employed in securing the complete insulator to a wall, ceiling, or other support.

lVhen the members or parts 1 and 2 are assembled, the apices 9 of the projections 8 of the one member accurately fit in the groove at, separated, as set forth, by the table 7 in the other member, and thereby the two members are interlocked, and the faces of the tables of both accurately coincide, so as to bring the bores or apertures 12 in direct alinement. \Vhen the two members are so assembled and interlocked, the one will be prevented from having lateral shifting movement on theother,

, and by such assemblage also the grooves 5 3 sec'urement by the use of a'single screw or nail.

and 11. coincide and form openings extending completely through the insulator at different elevations for the reception and retention of electrical conductors or leads.

The insulator will be constructed of porcelain or other insulating material, and the main advantages accruing from the construction as set forthare the avoidance of delay in selecting members or parts; saving the loss of broken parts, and to hold'zthe conductors or leads firmly in applied positionwithout the use of tie-wires or other fastening means usually employed, and arriving at areliable These advantages and superiority of the present form of insulator result from a duplication and interchangeability of the members or parts. Z Y v Though the preferred form of the improved insulator has been shown and'described, it

, will be understood that changes in the shape,

proportions, dimensions, and minor details may be resorted to without qdeparting from I the spirit of the invention.

Having thus described the invention, what is claimed as new is- 1. An insulator composed of interchangeable'members, both members being freely reversible, and veach member substantially cylindrical and cut away at one side to form shoulder having a V-shaped groove at its inner terminal and an outer, similarly-shaped v groove at a higher elevation than the former groove and provided .with a series of trans verse corrugations, a tableextending upwardly from the shoulder at an angle of inclination and dividing the member into two parts, and interlocking projections disposed on opposite sides of the table, thelatter having a central vertically-disposed opening-e25 tending therethrough.

2. An'insulator composed of interohange able and reversible members each of which is formed with upper and lower grooves, and a central upwardly-inclined table with an opening therethrou gh,interlocking projections bioing disposed on opposite sides of the table and having inverted-V-shaped apices.

3. An insulator composed of interchange- I able and reversible members, eachv memberhaving upper and lower grooves with trans} verse corrugations, p and an intermediate groove of- V-sh'aped form, a central upwardlyinclined table intersecting theintermediate V-shaped groove and having an opening extending vertically therethrough, and projections risingfrom the member at opposite sides of the table and provided with inverted-V- shaped apices. 7 7

4. An insulator composed of interchangeable andreversible members, said members '1 having transversely-corrugated groovesv at different elevations ad'apted'sto'coincide with similar structures,'an intermediate groove,

and projections extendingv upwardly on opposite sides .of the center, and having terminals to engage the said intermediate grooves.

5.. An insulator composed of interchange able and reversible members, said members having transversely-corrugated grooves at diiferent elevations adapted to coincide, intermediate grooves in the saidmembers, and interlocking devices to one side of the intermediate grooves. in

In testimony whereof ,Iaffix iny signa'ture in presence of two witnesses.

, WILLIAM H. NICHOLS.

I "Witnesses: i 7

JOHN -V. CARNEY, v v HARRY T. CUsHMAN, 

